package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.BaseException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
@Slf4j
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        //获取前端过来的用户名和密码
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();
        /**
         * 对前端传过来的密码进行加密
         */
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }
        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    //业务处理
    /**
     * 账号必须是唯一的
     * 手机号码为合法的11位手机号码
     * 身份证号码为合法的18位
     * 密码默认为123456
     * @param employeeDTO
     */
    @Override
    public void addEmployee(EmployeeDTO employeeDTO) {
        Employee pojo = new Employee();
         //有个工具类 帮助赋值属性的类BeanUills
        //第一个参数：把谁赋值给谁
        BeanUtils.copyProperties(employeeDTO,pojo);
        String s = DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes());
        pojo.setPassword(s);
        //状态启用
        pojo.setStatus(StatusConstant.ENABLE);
        //调用manpper存入数据库中
        employeeMapper.addEmployee(pojo);
    }

    @Override
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        //使用分页查询插件
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.selectPage(employeePageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }
    /**
     *启用或禁用员工帐号
     */
    @Override
    public void startOrStop(int status, long id) {
        /**
         * 业务处理,做更新updatepojo
         */
        Employee employee = new Employee();
        //设置
        employee.setId(id);
        employee.setStatus(status);
        employee.setUpdateTime(LocalDateTime.now());
        //更新id
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }

    /**
     * 通过id查询员工
     */
    @Override
    public Employee getById(long id) {
        Employee employee = employeeMapper.getById(id);
        if(null == employee){
            //全局异常处理 给前端友好提示
            throw new BaseException("员工信息不存在");
        }
        //脱敏处理 设置密码为null
        employee.setPassword(null);
        return employee;
    }

    /**
     *修改员工信息
     */
    @Override
    public void updateEmployee(EmployeeDTO employeeDTO) {
         Employee employee = new Employee();
         BeanUtils.copyProperties(employeeDTO,employee);
         employeeMapper.update(employee);
    }

}
